TY - JOUR
T1 - Numerical Analyses on the Influences of Armature Winding Shape and Yoke Arrangements on Total Losses in Fully Superconducting Synchronous Motors Using REBCO Tapes
AU - Kawagoe, Akifumi
AU - Inoue, Kyosuke
AU - Higashi, Yuki
AU - Iwakuma, Masataka
AU - Konno, Msayuki
AU - Tomioka, Akira
AU - Hase, Yoshiji
AU - Izumi, Teruo
N1 - Funding Information:
Manuscript received September 19, 2017; accepted March 15, 2018. Date of publication March 23, 2018; date of current version May 24, 2018. This work was supported in part by the Advanced Low Carbon Technology Research and Development Program from the Minister of Education, Culture, Sports, Science, and Technology, Japan. (Corresponding author: Akifumi Kawagoe.) A. Kawagoe, K. Inoue, and Y. Higashi are with the Kagoshima University, Kagoshima 890-0065, Japan (e-mail:,kawagoe@eee.kagoshima-u.ac.jp). M. Iwakuma is with the Kyushu University, Fukuoka 819-0395, Japan. M. Konno, A. Tomioka and Y. Hase are with the Fuji Electric Company Ltd., Ichihara 290-8511, Japan. T. Izumi is with the National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8560, Japan. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2018.2818750
Publisher Copyright:
© 2018 IEEE.
PY - 2018/6
Y1 - 2018/6
N2 - In the fully superconducting synchronous motors using REBCO tapes, the magnetic fields in the direction of perpendicular to the face of the tapes in armature windings generate large ac losses in the windings. Therefore, it is effective to reduce magnetic fields in the direction of perpendicular to tape face for the reduction of ac losses. A one of the methods is to get closer a yoke to the armature windings as possible. However, installing the yoke in the cooling area in order to get closer the yoke to the armature windings substantially increase the iron loss in the yoke by the cooling penalty. Therefore, in general, the yoke is placed at room temperature. The purpose of this paper is to evaluate the effect of installing the yoke in low temperature. So, we analyzed the properties of 500-kW fully superconducting synchronous motor by finite element method. We estimated the influences of installing yoke into low temperature in the two cases of armature winding shapes, solenoid windings and pancake windings. In this calculation, we assumed that superconducting material is EuBCO, and the operating temperature is 65 K.
AB - In the fully superconducting synchronous motors using REBCO tapes, the magnetic fields in the direction of perpendicular to the face of the tapes in armature windings generate large ac losses in the windings. Therefore, it is effective to reduce magnetic fields in the direction of perpendicular to tape face for the reduction of ac losses. A one of the methods is to get closer a yoke to the armature windings as possible. However, installing the yoke in the cooling area in order to get closer the yoke to the armature windings substantially increase the iron loss in the yoke by the cooling penalty. Therefore, in general, the yoke is placed at room temperature. The purpose of this paper is to evaluate the effect of installing the yoke in low temperature. So, we analyzed the properties of 500-kW fully superconducting synchronous motor by finite element method. We estimated the influences of installing yoke into low temperature in the two cases of armature winding shapes, solenoid windings and pancake windings. In this calculation, we assumed that superconducting material is EuBCO, and the operating temperature is 65 K.
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U2 - 10.1109/TASC.2018.2818750
DO - 10.1109/TASC.2018.2818750
M3 - Article
AN - SCOPUS:85044353355
SN - 1051-8223
VL - 28
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 4
M1 - 8323168
ER -